Gas - Nozzles Calibration - Inova L24 MCW TOP U/IT Installation And Maintenance Manual

GAS - NOZZLE CALIBRATION
The boilers leave the factory calibrated and predisposed to operate with NATURAL GAS and LIQUID GAS.
These calibrations are effected without the connection of the compensating joint (Pos. A) (mod. MCS).
For the calibrations to put into effect, see the table related below:
Gas type INOVA L24 MC W TOP INOVA L24 MCS W TOP
NATURAL GAS
(G20-20 mbars)
LIQUID GAS B
(G30-28/30 mbars)
LIQUID GAS P
(G31-37 mbars)
BURNER PRESSURE CURVES - OUTPUT
N.G.
kPa mbar
1,3 13
12
11
1 10
9
8
7
6
5
4
3
2
1
0 0
13,5
kW
9,3 13,9
11,6
kPa mbar
4 40
36
32
28
24
MC
20
2
16
12
1
8
4
0
0
13,5
kW
9,3 13,9
11,6
■ Minimum pressure (mbars)
• Slow ignition adjustment
3.4 mbars -NATURAL GAS
6.6 mbars - LIQUID GAS
Pressure on nozzles mbars
min. max.
2,7 12,5
5,7 26,0
7,6 33,3
MC
MCS
30,45
18,6 27,9
16,2 20,9 34,8
P
MCS
30,45
18,6 27,9
16,2 20,9 34,8
min. max.
2,2 11,6
7,0 27,7
7,1 35,8
kPa mbar
2,8 28
26
24
22
2 20
18
16
14
12
1 10
8
6
4
2
0 0
kW
9,3
A
B
Burner
Delivery nozzles
m /h Ø mm.
3
3,06 1,25
0,89 0,77
1,17 0,77
B
MCS
MC
13,5
13,9 18,6 27,9
11,6 16,2 20,9
A Compensating joint
Connecting pipe
B
To effect the gas valve
calibration, proceed as
follows:
a) take the pipe (B) off
the joint (A);
effect calibration
b)
connect the pipe (B)
c)
again to the joint
(A)
34
L.C.V.
kcal/h
8.550
29.330
22.360
30,45
34,8